Cover for a trailer hitch



FIG. 1 is a top plan view of a cover for a trailer hitch showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a side elevation view thereof, the opposite side being a mirror image of that shown; and

FIG. 6 is a perspective view thereof. 

The ornamental design for a cover for a trailer hitch, as shown and described. 